Before I wrote the post earlier I cleared cache, restarted the browser, updated the easylist but nothing changed. I even enabled ScriptSafe but the ads were still there. Now after coming back the ads are gone... Not quite sure why or how. Sadly it's only working half. The spaces where the ads would be are blank now, not removed, which makes the website look kinda weird. Is that normal or is something wrong here?

Well yeah, I had the ads without the custom filters, that's why I added them in the first place. I will try again to remove them, but will do that later. Gotta hurry now and buy some groceries for tonight.

Well yeah, I had the ads without the custom filters, that's why I added them in the first place. I will try again to remove them, but will do that later. Gotta hurry now and buy some groceries for tonight.

Okay so I removed all the cusom filters to see what would change. There were no ads. Which I found weird, cause I definitly had the ads before. Then I remembered that I have ScriptSafe enabled. After disabling ScriptSafe I indeed see all the ads again. Currently I have two list subscribed:
Adblock Warning Removal List
EasyList Germany + EasyList

That's it. I removed all other custom filters and the website is loaded with ads and the anti-adblock is also there when I try to access the Regenradar.

I had some other uBlock origin, something different alltogether. Now with the addon you linked it's working. No more ads with the default lists enabled. Great and thanks for the help. Didn't know that Adblock Plus was outdated.